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Create owned value type on data element or function argument

Since R2021b



    ownedType = createOwnedType(dataElement) creates an owned value type on a data element or function argument.

    An owned interface is an interface that is local to a specific port and not shared in a data dictionary or the model dictionary.

    ownedType = createOwnedType(dataElement,Name=Value) creates an owned value type on a data element or function argument with additional options.


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    model = systemcomposer.createModel("archModel");
    port = model.Architecture.addPort("inPort","in");
    interface = port.createInterface("DataInterface");
    element = interface.addElement("newElement");
    subInterface = element.createOwnedType
    subInterface = 
      ValueType with properties:
               Name: ''
           DataType: 'double'
         Dimensions: '1'
              Units: ''
         Complexity: 'real'
            Minimum: '[]'
            Maximum: '[]'
        Description: ''
              Owner: [1×1 systemcomposer.interface.DataElement]
              Model: [1×1 systemcomposer.arch.Model]
               UUID: 'd184ab90-2be9-4acc-9d94-ed62d0cf2827'
        ExternalUID: ''

    Select the architecture port inPort on the architecture model and open the Property Inspector from the Modeling menu. Under Open in Interface Editor, select the edit link. In the Interface Editor, enter the Port Interface View. Observe the new data element newElement under the port inPort.

    Input Arguments

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    Data element or function argument, specified as a systemcomposer.interface.DataElement or systemcomposer.interface.FunctionArgument object.

    Name-Value Arguments

    Specify optional pairs of arguments as Name1=Value1,...,NameN=ValueN, where Name is the argument name and Value is the corresponding value. Name-value arguments must appear after other arguments, but the order of the pairs does not matter.

    Before R2021a, use commas to separate each name and value, and enclose Name in quotes.

    Example: createOwnedType(dataElement,DataType="double",Dimensions="2",Units="m/s",Complexity="complex",Minimum="0",Maximum="100",Description="Maintain altitude")

    Data type, specified as a character vector or string for a valid MATLAB® data type. The default value is double.

    Example: createOwnedType(dataElement,DataType="double")

    Data Types: char | string

    Dimensions of value type, specified as a character vector or string. The default value is 1.

    Example: createOwnedType(dataElement,Dimensions="2")

    Data Types: char | string

    Units of value type, specified as a character vector or string.

    Example: createOwnedType(dataElement,Units="m/s")

    Data Types: char | string

    Complexity of value type, specified as a character vector or string. The default value is real. Other possible values are complex and auto.

    Example: createOwnedType(dataElement,Complexity="complex")

    Data Types: char | string

    Minimum of value type, specified as a character vector or string.

    Example: createOwnedType(dataElement,Minimum="0")

    Data Types: char | string

    Maximum of value type, specified as a character vector or string.

    Example: createOwnedType(dataElement,Maximum="100")

    Data Types: char | string

    Description of value type, specified as a character vector or string.

    Example: createOwnedType(dataElement,Description="Maintain altitude")

    Data Types: char | string

    Output Arguments

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    Owned value type, returned as a systemcomposer.ValueType object.

    More About

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    TermDefinitionApplicationMore Information

    A System Composer™ architecture represents a system of components and how they interface with each other structurally and behaviorally.

    Different types of architectures describe different aspects of systems. You can use views to visualize a subset of components in an architecture. You can define parameters on the architecture level using the Parameter Editor.


    A System Composer model is the file that contains architectural information, including components, ports, connectors, interfaces, and behaviors.

    Perform operations on a model:

    • Extract the root-level architecture contained in the model.

    • Apply profiles.

    • Link interface data dictionaries.

    • Generate instances from model architecture.

    A System Composer model is stored as an SLX file.

    Create Architecture Model with Interfaces and Requirement Links

    A component is a nontrivial, nearly independent, and replaceable part of a system that fulfills a clear function in the context of an architecture. A component defines an architectural element, such as a function, a system, hardware, software, or other conceptual entity. A component can also be a subsystem or subfunction.

    Represented as a block, a component is a part of an architecture model that can be separated into reusable artifacts. Transfer information between components with:


    A port is a node on a component or architecture that represents a point of interaction with its environment. A port permits the flow of information to and from other components or systems.

    These are different types of ports:

    • Component ports are interaction points on the component to other components.

    • Architecture ports are ports on the boundary of the system, whether the boundary is within a component or the overall architecture model.


    Connectors are lines that provide connections between ports. Connectors describe how information flows between components or architectures.

    A connector allows two components to interact without defining the nature of the interaction. Set an interface on a port to define how the components interact.


    TermDefinitionApplicationMore Information
    interface data dictionary

    An interface data dictionary is a consolidated list of all the interfaces and value types in an architecture and where they are used.

    Local interfaces on a System Composer model can be saved in an interface data dictionary using the Interface Editor. You can reuse interface dictionaries between models that need to use a given set of interfaces, elements, and value types. Linked data dictionaries are stored in separate SLDD files.

    data interface

    A data interface defines the kind of information that flows through a port. The same interface can be assigned to multiple ports. A data interface can be composite, meaning that it can include data elements that describe the properties of an interface signal.

    Data interfaces represent the information that is shared through a connector and enters or exits a component through a port. Use the Interface Editor to create and manage data interfaces and data elements and store them in an interface data dictionary for reuse between models.

    data element

    A data element describes a portion of an interface, such as a communication message, a calculated or measured parameter, or other decomposition of that interface.

    Data interfaces are decomposed into data elements:

    • Pins or wires in a connector or harness.

    • Messages transmitted across a bus.

    • Data structures shared between components.

    value type

    A value type can be used as a port interface to define the atomic piece of data that flows through that port and has a top-level type, dimension, unit, complexity, minimum, maximum, and description.

    You can also assign the type of data elements in data interfaces to value types. Add value types to data dictionaries using the Interface Editor so that you can reuse the value types as interfaces or data elements.

    Create Value Types as Interfaces
    owned interface

    An owned interface is an interface that is local to a specific port and not shared in a data dictionary or the model dictionary.

    Create an owned interface to represent a value type or data interface that is local to a port.

    Define Owned Interfaces Local to Ports

    An adapter helps connect two components with incompatible port interfaces by mapping between the two interfaces. An adapter can act as a unit delay or rate transition. You can also use an adapter for bus creation. Use the Adapter block to implement an adapter.

    With an adapter, you can perform functions on the Interface Adapter dialog box:

    • Create and edit mappings between input and output interfaces.

    • Apply an interface conversion UnitDelay to break an algebraic loop.

    • Apply an interface conversion RateTransition to reconcile different sample time rates for reference models.

    • Apply an interface conversion Merge to merges two or more message or signal lines.

    • When output interfaces are undefined, you can use input interfaces in bus creation mode to author owned output interfaces.

    Version History

    Introduced in R2021b